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alexira [117]
3 years ago
15

Whatwould u times by 9 to get 99?

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
6 0
The answer would be 11.
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Please Help!!<br><br> What should be done 10x ^ 2 - 8x to create a perfect square ?
Pani-rosa [81]

Answer: 10x^2-8x+16

Step-by-step explanation:

Use the formula (b/2)^2

then plug in values:

(-8/2)^2 = -4^2 = 16

ans: 10x^2-8x+16

hope this helps

4 0
2 years ago
You have $75.00 to spend at the mall. You want to buy a hoodie that costs $80.00. The store is having a 20%-off sale. (There is
Juli2301 [7.4K]
$80.00 x 0.20 = $16.00
$80.00 - 16.00 = $64.00
the hoodie costed $64.00
you were left with $16 to spare

7 0
3 years ago
An experiment has a high degree of ______________ when it shows convincingly that changes in behavior are a function of the inde
adelina 88 [10]

The answer is Internal Validity.

Internal Validity is high in an experiment. when it demonstrates persuasively that changes in behavior are caused by the independent variable and not by unknown factors.

What is Internal Validity?

  • Internal validity is defined as the degree to which the observed results represent the truth in the population under investigation and are not the consequence of methodological flaws.
  • Internal validity is the degree of certainty that the causal link being examined is reliable and unaffected by other factors or variables.
  • The extent to which study results may be extended (generalized) to other contexts, groups, or events is referred to as external validity.

To learn more about Internal Validity visit:

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5 0
1 year ago
Plzzzz help!!! quick one ​
ludmilkaskok [199]
D= 65 degrees.

Because straight line adds up to 180
So 180-115= 65
5 0
2 years ago
3.1÷10.261 how to show my work
marissa [1.9K]
First, convert the decimals into improper fractions. The fractions are:
31/10 and 10261/1000. To divide the fractions, change division into multiplication after flipping the numerator and the denominator of the second fraction. This comes out to be 31/10 *(times) 1000/10261.
31*1000 is 31,000 and 10*10261 is 102,610. This equals the fraction: 31,000/102,610. Simplify this.
7 0
3 years ago
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